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Of course to understand the histories of techniques we also need to understand the social and economic factors that led to them.

So Construction History also encompasses the development of guilds and trade bodies, contracts and accounts, methods of payment and procurement, working hours, rates of pay and conditions for workmen, and their training.

© Crown copyright 2013 This publication is licensed under the terms of the Open Government Licence v3.0 except where otherwise stated.

To view this licence, visit uk/doc/open-government-licence/version/3 or write to the Information Policy Team, The National Archives, Kew, London TW9 4DU, or email: [email protected]

Another visually powerful way of representing Earth's history is via the use of the geological `clock' (Figure This website has an `infographic' showing geological time on a clock.

Each hour on the clock corresponds to a period of the Earth's history, and shows the characteristics of each period and the key events within them.

So it includes bridges, sewers, power stations, mills etc. Importantly the subject focuses on how these objects were constructed.

It is not restricted to buildings but also includes the construction of civil engineering and infrastructure.It should inspire pupils’ curiosity to know more about the past.Teaching should equip pupils to ask perceptive questions, think critically, weigh evidence, sift arguments, and develop perspective and judgement.We will then present the methods by which we are able to determine evolution of life forms over time through examining the The geological timescale is a 'calendar' of events in the Earth's history.It shows major geological and climactic events, and how this affected the emergence and disappearance of species over time.

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The article connects this history to other examples in the history of technology that show how technological systems touted as “revolutionary” often help entrenched structural biases proliferate rather than breaking them down.